In [1]} Craw–Ishii provide an abstract description of sufficiently many inequalities to carve out the chamber \(\mathfrak {C}_0\) . These inequalities arise from the linearisation map
\(L_{\mathfrak {C}_0}\colon \ \Theta \rightarrow \operatorname{Pic}(\mathcal {M}_{\mathfrak {C}_0}),\) 
